A033680 - cp's OEIS frontend

A033680 a(1) = 1; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.

n	a(n)
1	1
2	1
3	3
4	11
5	13
6	29
7	39
8	49
9	83
10	141
11	247
12	273
13	291
14	347
15	373
16	401
17	441
18	567
19	571
20	651
21	903
22	957
23	1001
24	1129
25	1401
26	1457
27	1467
28	1561
29	1889
30	2083
31	2169
32	2523
33	2717
34	2743
35	3447
36	3509
37	3711
38	4087
39	4899
40	4983
41	5087
42	5151
43	5263
44	5429
45	5551
46	6017
47	7389
48	7839

[1, 1, 3, 11, 13, 29, 39, 49, 83, 141, 247, 273, 291, 347, 373, 401, 441, 567, 571, 651, 903, 957, 1001, 1129, 1401, 1457, 1467, 1561, 1889, 2083, 2169, 2523, 2717, 2743, 3447, 3509, 3711, 4087, 4899, 4983, 5087, 5151, 5263, 5429, 5551, 6017, 7389, 7839]

cp's OEIS Frontend

A033680 a(1) = 1; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.

Table of values

List of values